|Table of Contents|

Study on the Cooling Capacity With Large Span Double Film Arch of Plastic Greenhouse in Summer(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年10
Page:
45-51
Research Field:
Publishing date:

Info

Title:
Study on the Cooling Capacity With Large Span Double Film Arch of Plastic Greenhouse in Summer
Author(s):
WEI XinLI JiansheGAO Yanming
(College of Agriculture,Ningxia University,Yinchuan,Ningxia 750021)
Keywords:
plastic greenhousedifferent spancooling capacitytest of environment
PACS:
-
DOI:
10.11937/bfyy.201610012
Abstract:
In order to explore the environmental advantages of a new type large span double film arch of plastic greenhouse with hot dip galvanized steel,the requirements of the cooling effect in summer were analyzed.With 10 m span single film plastic greenhouse as the control,16 m,12 m,10 m,8 m,20 m as test objects,ZWSN-C-A were used to measure the environment performance.The results showed that 8 m,16 m,20 m large span plastic greenhouse had less air temperature 1.15 ℃,0.94 ℃,0.59 ℃,which reduced soil temperature 2.98 ℃,2.32 ℃,3.08 ℃.12 m large span greenhouse compared to other four span of air humidity is minimum,for about 28.08%.Remaining other five greenhouse of humiditythat have no obvious difference,which were about 47%.Light intensity of the control greenhouse was significantly stronger than the double film shed,but the transmittance of 10 m,16 m span plastic greenhouse was more larger than other three ones,which were more 2.36 klx,2.08 klx than 8 m greenhouse.Maintaining a high carbon dioxide concentration was 10 m,12 m,16 m double film greenhouse.Integrated above five environmental factors,16 m span plastic greenhouse had the higher light intensity and carbon dioxide concentration,in addition to in the cooling,moisture had a greater advantage in the summer to compare with the rest of the five greenhouses,which was more promotional.

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Last Update: 2016-07-11